Finding the Fourth Proportional to 489,463,903.12, 734,220,251.16 and 139,761,837.76
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Solution
The fourth proportional to 489,463,903.12, 734,220,251.16 and 139,761,837.76 is: 209,649,722.83
Step by Step Solution
- Step 1: Write the proportion equation
489,463,903.12 : 734,220,251.16 = 139,761,837.76 : x - Step 2: Convert to fraction form
489,463,903.12/734,220,251.16 = 139,761,837.76/x - Step 3: Cross multiply
489,463,903.12x = 734,220,251.16 × 139,761,837.76 - Step 4: Simplify right side
489,463,903.12x = 102,615,971,622,730,368 - Step 5: Solve for x
x = 102,615,971,622,730,368/489,463,903.12 - Step 6: Final answer
x = 209,649,722.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.